566004380816661 has 16 divisors (see below), whose sum is σ = 769016469609216. Its totient is φ = 370166214764736.

The previous prime is 566004380816657. The next prime is 566004380816701. The reversal of 566004380816661 is 166618083400665.

It is not a de Polignac number, because 566004380816661 - 2² = 566004380816657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 566004380816595 and 566004380816604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565004380816661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241557085 + ... + 243888978.

It is an arithmetic number, because the mean of its divisors is an integer number (48063529350576).

Almost surely, 2^{566004380816661} is an apocalyptic number.

It is an amenable number.

566004380816661 is a deficient number, since it is larger than the sum of its proper divisors (203012088792555).

566004380816661 is a wasteful number, since it uses less digits than its factorization.

566004380816661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485453452.

The product of its (nonzero) digits is 29859840, while the sum is 60.

The spelling of 566004380816661 in words is "five hundred sixty-six trillion, four billion, three hundred eighty million, eight hundred sixteen thousand, six hundred sixty-one".